Magnetic ore-separator.



PATENTED FEB. 6, 1906.

G. GRUNDAL. MAGNETIC ORB SEPARATOR.

APPLICATION FILED NOV.3,1904.

W/TA/ESSfJ; 1% f e,..fp11owing aghastth sra l s "flan see. t eggtgfffiii w wer fih tit if il t e .pureorepaftile'soufiof thstre irgl'b water, while the less ureparticles gathe'r' close beneath tlieisii "easements and are carried away alone separately from thedead powder, which sinks down and isallowed to flow, away. ;;1,. 1- My present invention is an i'in rovement on the apparatus forming the su jectanatter of my application for patent, Serial No. 180,904, filed November lz, 1903, and like that apparatus is adapted for carrying out the process forming the subject of my ap )lication for patent, Serial l\o. 235,394, filed December 3, 1904. I On the accompanying drawings there is shown a forin of apparatus as an example.

Figure 1 represents a vertical longitudinal section of the a paratus, and Fi 2 represents a section t ough the ore an water inlets at. right angles to the section Fig. 1.

The apparatus consists of acylindrical electromagnet having double walls Aand B,connected with each other at the top, and the winding C, arranged between the walls. The conducting-wires enter and issue at D. The walls'A and B extend downward beyond the winding C and end in tapering ed es, which form two concentric poleieces 1E F. The electromagnet is supporte on arms G, projectin from a vau ted; cover H, resting on the ho low frame I, whibh is funnel-shaped at p the top. In this funnel right below the mag- 'net there are three stationary funnel-she ed vessels J, K, and L .one within the ot er, which are supported by a casting fixed to the frame I, the said casting ending at the to in two concentric annular troughs M and in which enter the lower ends of the funnels J and K, respectively. The lower end of the funnel L enters into the chamber or tube 0 inside the inner trough. The said funnel L is screwed in the opening of the '1 n t 3 g i I .Jisba. sexiest. 23 123 I .thro

a re a tu e. S leads outlthrough' the wall ofthc ,frame- .In Ithe-chamber-O right below the bottom o f -the funnel L enters ano'thertuhe T, communicating by a tube U with a watersupply outside" the frame.

.4 .iFB asptran e e Ea e and the disk X is caused to rotate.

Patented-F b. e, 190

' chamber-O., so as be c apable of adjustment for a purpose mentioned below. Thecasting which su ports the funnelsJ K L is mounted on two tu 'ulararms Pand Q, fixed over-holes on theinside ofthe frame, P forming the dis--. charge. from the trough M and Q the discharge from the trough N. The discharge 1 hQis providedoutsidethe framewith. ating-valye R. vFrom the chamber 0 4 cone nside thev funnel L.

Beneath, the pole-pieces a sufficiently rapid rotation-being imparted to the shaft by any suitable means. A indicates the lowerend of a driving-shaft.

The o eration of the ap aratus is as follows: A ter closing the va ve R the water, with the suspended ore-powden, is led in through the tube S into the funnel L, and a water-jet is driven through'the tube T in order to stir and assist in carrying the susppnded material at a regulated rate over the outwardly-bent edge of the funnel L. After I the funnel K has been filled the stream passes to the funnelJ and from it out through the pipe P. The electromagnet is now 1gxcited,

yre latin the supply through the tubes S an U and t e position of the valve R the suitable s eed of the stream of sus ended material wing over the edge of the unnel L may be obtained, so that the magnet has ti me to pull away the most magnetic particles out of the water,-which does not come into contact with the disk, and to cause the less magnc e particles .to follow the stream into the funnel J to'bedischar ed through the tube P, to be further enn'cfied and giving the dead particles time to sink down in the funnel K, from which they flow oil through the tube Q. The particles that are ulled out of the water and against the rapi y-rotati disk X are immediately flung awa to war the sides against the vault H and fa down in the interior of the frame I, from the lower part of which theyvare removed. By lifting or lowering the V is awlispersingj,

I 7 :1 E and 1 there is a disk X, fixed to. a vertical shaft .Y, -mounted in bearings inside the cylindrical electromagnet,

funnel L the depth of the stream of suspended IIO It is not necessary thatthe vessels beneath the magnet should be funnel-shaped. The ma have any other suitable form, if desire claim as my invention.

1. A magnetic separator for ore suspended in water, comprising an electromagnet with its pole-pieces directed downward, a horizontal rotary disk beneath said poles and means for feeding ore'suspended in water upward from below toward the disk and horizontally in closeroximit thereto, but outof. contact therewith, as an for the purpose set forth.

2. A magnetic separator for ore suspended in water, com rising anannular electromagnet with its 0 e-pieces directed downward, a rotary disk beneath said pole-pieces and beneath said disk two annular vessels, means for supglying ore suspended in water upward throug one of said vessels and over the edge to the other, and in close proximity to, but out of contact with, the rotary disk.

3. A magnetic separator for ore suspended in water, comprising an electromagnet with its pole-pieces directed downward, a rotary disk beneathsaidpole-pieces,andbeneathsaid disk two annular vessels, means for supplying or'e suspended in water upward through one of said vessels and to the other, with an outer vessel to receive and collect the rich ore drawn out of the water and thrown off the discharge tube, adjustable b '4. A magnetic oreseparator, an upright cylindrical electromagnet' vmgits pole-pieces directed downward in the shape of concentric rings, a'rapid1y-rotating-3 disk beneath the lpole-pieces, and beneath the said disk a funne providedwith aconical disperser inserted in it and with tubes for the suspended material and for water opening into the lower part of the funnel, another'fun- 4 nel surrounding thefirst funnel and having a means of a valve, a third funnel surroun g the second funnel having a discharge-tube, and a collecting vessel surroundingtlie circumference of 45 the disk.

5. A magnetic separator for ore suspended in water, comprising an elctromagn'et, a' moving surface beneath the'pole-piece, and

above the water-level avessel for 50 ore suspended-in water below said moving surface, an inlet to the lower art of said vessel and .a ;water-jet tube in-t e said inlet to press the water and ore u ward.

In testimony whereof have signed my 55 name to this specificationin the presence of 

